Slater’s 50/50, a trendy Southern California chain specializing in burgers made with equal parts bacon and beef, plans to open its first North County location in San Marcos this winter.

It will be the seventh location for the upscale chain, which opened its first restaurant near Anaheim in 2009. The first San Diego County location opened in Point Loma’s Liberty Station in November 2011.

Slater’s is famous for infusing nearly everything on its menu with bacon, including brownies, ice cream and burger buns. The chain is also known for serving a wide variety of craft beers and for having long lines on weekends.

The San Marcos restaurant, just north of state Route 78 in the former site of Cool Hand Luke’s and the Original Roadhouse Grill, will seat roughly 225 guests and include an outdoor patio.

“We’ve been listening to guests at our Liberty Station location tell us for a couple years that they want us to bring Slater’s 50/50 to North County, and we feel like this location will truly serve both inland and coastal areas,” said Scott Slater, who founded the chain.

The site was chosen because of its freeway access and central location within North County, he said. It’s also near the Sprinter rail line and Palomar Station, a large, mixed-use community under construction.

The idea for the chain came when Slater, a San Diego State alum, got sick of grilling beef burgers while tailgating at Chargers games. So he tried to grill a pork belly, the source of most bacon.

He later hooked up with executive chef Brad Lyons to create the 50/50 burger, which is half bacon and half beef. The chain also serves other patties, including all-beef, veggie and turkey.

Slater’s 50/50 is also known for unusual toppings, such as peanut butter, spam, strawberry jelly, fried eggs, alfalfa sprouts, sauerkraut and pumpkin sauce.